Can you not pay for some of the options in a lump sum yourself in addition to what you'll get on the company lease? This might improve the car for you and enhance your driving pleasure.
I would go for Mineral White (£0), Coral Red Leather (£0), Hex + Gloss Black Interior Trim (£0), Heated Front Seats (£300), Park Distance Control Front and Rear (£380), Exterior Folding and Auto Dimming Door Mirrors (£275). That makes it £955 for options. Not too much above your restricted budget.
This will be a very nice car.
Superman F30 EBII 330d sDrive M Sport//Coral Red Hippo Hide Chairs.